According to the different contents, the abstracts of periodical papers in China can be divided into three categories. The first category is reportable abstract, also called informative abstract or informative abstract, which comprehensively and briefly summarizes the purpose, methods, main data and conclusions of the paper. The second kind is indicative abstract, also called explanatory abstract, descriptive abstract or argument abstract, which summarizes the theme of the paper in only a few sentences, and does not involve arguments and conclusions, and is often used in summary, meeting report, etc. The third category is the indicative summary of the report, which expresses the part of the document with high information value in the form of report summary and the rest in the form of indicative summary. These abstract types are widely used in China's periodical papers, and the appropriate abstract types should be selected according to the specific needs and the nature of the papers.